I migrated from Material-UI v4 to v5. Now I receive this error wherever I try to render my Material-UI-based components:
You seem to be using a value for 'content' without quotes, try replacing it with `content: '""'`
It seems to be caused by Emotion, the new style library used by v5.
I found a Github issue for Emotion that discusses this error, but it hasn't helped me. I shouldn't have to be fiddling with how MUI uses Emotion, right? I'd expect that complexity to be hidden from me.
Any ideas on how to fix this?
